A student measures the reaction H₂(g) + Cl₂(g) <=> 2 HCl(g) concentrations at a few different temperatures and obtains the equilibrium constant. The student wants to use the van't Hoff equation to roughly determine the reaction enthalpy assuming that it does not change over the region of interest. T(K) 300 500 4x1018 4x1031 Keq So the student plots the data in the InK vs 1/T diagram and obtains a linear fitting shown below: 80 8382 60 240 20 0 y-22585x-24632 0 (¹) 0.002 0.004 1000 4×108 What is the reaction enthalpy value obtain from this figure? kJ/mol 3sig fig. (hint, rearrange the equation so that you can clearly see the slop and the intercept)
A student measures the reaction H₂(g) + Cl₂(g) <=> 2 HCl(g) concentrations at a few different temperatures and obtains the equilibrium constant. The student wants to use the van't Hoff equation to roughly determine the reaction enthalpy assuming that it does not change over the region of interest. T(K) 300 500 4x1018 4x1031 Keq So the student plots the data in the InK vs 1/T diagram and obtains a linear fitting shown below: 80 8382 60 240 20 0 y-22585x-24632 0 (¹) 0.002 0.004 1000 4×108 What is the reaction enthalpy value obtain from this figure? kJ/mol 3sig fig. (hint, rearrange the equation so that you can clearly see the slop and the intercept)
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 105QRT
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